function tagslink($aid, $num = 5, $tbname = 'news') {
    global $public_r, $dbtbpre, $empire, $navinfor, $class_r;
    $qr = $empire->fetch1("select rewritetags from {$dbtbpre}enewspublic limit 1");
    $sr = $empire->fetch1("select stb from {$dbtbpre}ecms_{$tbname} where id=$aid");
    $fr = $empire->fetch1("select infotags from {$dbtbpre}ecms_{$tbname}_data_{$sr[stb]} where id=$aid");
    $tagstr = '' . $fr[infotags] . '';
    $tagarr = explode(",", $tagstr);
    for ($i = 0; $i < count($tagarr) && $i < $num; $i++) {
        if ($tagarr[$i]) {
            if ($qr[rewritetags]) { // 开启伪静态时的链接
                $link = $public_r[newsurl] . "tags-" . urlencode($tagarr[$i]) . "-0.html";
            } else { // 动态的tags链接
                $link = $public_r[newsurl] . "e/tags/?tagname=" . urlencode($tagarr[$i]);
            }
            $tags .= "<a href='$link' target='_blank'>" . $tagarr[$i] . "</a> ";
        }
    }
    return $tags;
}